NBC Sports Chicago made it official Wednesday, announcing a multiyear media rights deal with the White Sox, Bulls and Blackhawks. The agreement, pending MLB, NBA and NHL approval, would create a new partnership starting with the 2019-20 seasons.

While the Cubs are poised to create their own network, NBC Sports Chicago will be the exclusive regional home for all regular-season games, preseason/spring training games and the first round of the postseason for the Bulls and Hawks.

The Cubs, Sox, Bulls and Hawks partnered with NBC Sports Chicago, then called Comcast SportsNet Chicago, on a 15-year deal in 2004.

But now the Cubs will seek more control and more lucrative waters, while the Sox, Bulls and Hawks remain.

“We are very pleased to extend our relationship with our partners at NBC Sports Chicago,” Sox and Bulls Chairman Jerry Reinsdorf said in a statement. “In addition to being the experts in consistently delivering the finest game and surrounding game coverage in the business, it is their year-round commitment to providing our fans with innovative and entertaining multiplatform content that makes NBC Sports Chicago among the very best in the regional sports industry.”

Said Hawks Chairman Rocky Wirtz: “Blackhawks fans should be very excited that we are continuing our partnership with NBC Sports Chicago. In addition to raising the bar on our game-day broadcasts, NBC Sports Chicago has elevated non-game-day television coverage and evolved their digital and social media platforms into some of the most viewer-friendly in the industry.”